Two skydivers, Oliver and Robert, jumped out of the plane and were having a conversation on the way down.
Robert: “I was in a hurry this morning, and I can’t remember if I asked you to pack my chute for me. “
Oliver: “I’ve been pretty forgetful myself. I’m lucky I remembered to pack mine. “
Robert: “Wait a minute. You mean I forgot to ask you to pack my chute for me?”
Oliver: “No, silly. You didn’t forget to ask me to pack your chute. I’m the one who actually forgot to pack your chute!”
Robert: “Phew! Thank goodness, for a minute there I thought I was losing my mind!”
This joke is included in the Black Book of Jokes. You can order it from here.